I have a question regarding 1 book I have read but can't re-read as I don't remember its author and title. I can't find it using Google and some databases. I don't think I'll ask for another books so I'm not registered. Sorry if it's against the rules here. Also - I'm Polish and have read that book translated and it's possible its original and Polish titles are very different so finding its author could be helpful. Sorry for all the potential mistakes, my English is average.
What I remember: It's similar to Baxter's Evolution in some aspects, that it includes a super volcano that explodes and destroys whole continents and all humans on the surface plus animals and plants. It covers thousands of years while Evolution more like millions and leads to a kind of machine intelligence - but in my missing book there's only organic intelligence.
What else, some people travel to a lunar base when the volcano explodes and it's maybe 10 or less individuals. One leaves behind his wife and unborn child and later develops depression and PTSD as he couldn't save them and tries to kill himself or kills himself. Turns out the remaining people must clone themselves as they get old and sick (radiation or effects of poisons and gases they inhaled in the last moments on the planet, or something similar). Many generations of clones live and die in that base and some go to Earth and try to re-populate it and bring some samples of animals and plants stored in magazines of their base but every attempt can't succeed as the planet is in bad condition. Then the base becomes dangerous as they no longer have spare parts and metals they need to make spare parts and last clones must go back. Only then they see a planet with animals and plants evolved from original animals we know. Turns out one of previous generations of clones spread life on the planet but their communicators got destroyed and they couldn't notify their fellow clones on the moon. Some children of the clones on the surface survived and had children who evolved and created another population of neo-Earthlings and they had some legends about "gods" living in heaven and inside the moon that one day will return to their children that is people on the surface.
It's possible I remember multiple books glued together. It wasn't a part of a series but a stand-alone book or it was a part of a series but only 1 part available in my country.